Dry battery



May-29,1928. I 1 71 5 f A.' T. BALDWIN I DRY BATTERY Filed May 31, 1925.E' INVENTOR 7 Hz. 1. EN 7." BHLDIYIN ATTORNEYS Patented May 29, 1928.

UNITED STATE- ALLEN T. BALDWIN, OF MON'I'CLATR, NEW vJERSEY, ASSIGNOR,BY MESNE ASSIGN-v MENTS, TO NATIONAL CARBON COMPANY, INC., OF NEW YORK,N. Y., A. CORPORA- TION OF NEW YORK.

My invention relates to dry batteries, and particularly to a containertherefor. The object of my invention is to provide a contain- -er whichseals the battery terminals against s-access except by a tell-talerupture of the container.

In the accompanying drawings- Fig. 1 is a perspective of a batterycasing in which my inventionis embodied in one form; r Y

Fig. 2 is a vertical sect-ion therethrough showing the battery withinthe casing; Fig. 3 is-a partial perspective of the terminal end of thecasing showing one of the end flaps in open position;

Fig. 4 is a plan of the casing blank; and Fig. 5 is a broken plan of abattery showing the manner in which the terminal end of the casing isruptured to expose the bindin terminals. a v 1 gurreptitious theft ofcurrent from batteries before they are sold to the consumer is a commonpractice in many retail stores, incident to the testin of lamps or otheras equipment. This lea to deterioration of the battery andthe consequentdissatisfaction of the customer with the service which the batterygives. The present invention provides a simple and effective sealedcontainer or battery casing which prevents access to the batteryterminals without a telltale rupture of the casing which puts thepurchaser on guard.

As here shown the battery is of the usual cylindrical type, comprising azinc shell 15 to which is secured at one end the terminal 16, the secondterminal 17 being mounted at the head of the central carbon pole 18. Thebattery is enclosed within an insulating casm ing 19 of rectangularoutline formed from heavy paper or card-board. I, The casing blank 20,indicated in Fig. 4, comprises thesections A, B, (land D which form thefour side walls thereof. At one 5 end of the casing the severalsectioiis A to D inclusive, have flaps E, F, G and H which are foldedover and glued together to form a three-ply bottom 21. At the oppositeends of the several sections ofthe blank are flaps I, K, L and M whichare folded over and sealed to form the top 22 0f the casing at theterminal end of the battery.

The flaps K and M are of materially eater length than the flaps I and L,the' 5'5 fitter being of such limited extent that when Application filedMay 31,

i must be ruptured along the scoring and the DRY BATTERY.

[1923. Serial N0. 622,568.

K, which rests directly upon and is sealed I to the outer faces of theflaps I and L, is scored at 23. Within'the same area and in registerwith the sc-orin of the fla K, the flap M which overlies ap- K, isscored at 2 The scoring 24 of flap M is continued down the side sectionD of the casing at 25 in the form of a V, and is so located as to exposethe binding terminal 16 when the areas 26 and 27 of the flaps M and Kwhich lie within the scoring, are removed by rupturing the casing alonthe scoring lines.

Under 'normal con itions the casing is sealed at both ends of thebattery, and its terminals thus completely enclosed. To obtain access tothe terminals the casing top areas 26 and 27 in the top flaps K and M Iremoved, This may be-readily accomplished by the pressure of the fingerupon the area within the scoring.

It is common practice to arrange batteries in groups, and the presentcasing forms an insulating cover for the zinc shell 15, which serves tospace and insulate adjacent cells. from each other. The break-out area2627 is so limited in extent that not only the side flaps I and L, butalso the marginal areas of the flaps K and M, overlie the batter top andthus retain the casing in position t ereon, even when the .terminals areexposed.

' Various modifications in detail will readily occur to those dealingwith the problem, which do not depart from what I claim as my invention.

I claim- 1. The combination with a dry battery having binding terminalsat one end thereof, of a sealed casing of frangible insulating materialhaving at the battery terminal end thereof an area defined by a weakenedboundary, said area constituting a tear-out por tion smaller than thetop of the battery and positioned adjacent to the battery terminals, theremoval of which exposes the battery terminals.

2. Thcombination with a dry battery having binding/terminals at one endthereof, of a scale casing of frangible insulat-' ing material having atthe battery terminal end thereof an area defined by a weakened boundary,said area including but a portion no of the casing end adjacent saidterminals and a contiguous portion of one side of the casing, andconstituting a tearout portion,

removal of which. exposes the battery terminals.

The combination with a dry battery having at one end a central and amarginal terminal, of a sealed casing enclosing the battery body andterminals, but having at the terminal end thereof an elongated tearoutportion'of smaller area than the end of said battery, defined by 'aweakened boundary and including a portion of a side Wall of the casingin register with the marginal terminal.

4. The combination with a dry battery having at one end a central and amarginal terminal, of asealed casing enclosing the battery'body andterminals, said casing being of rectangular outline and having foldedover end flaps scored in register to define a tear-out area registeringwith the battery terminals, the scoring in one of said flaps beingextended to the margin of the casing end and down one side wall thereoftoexpose the side of the marginal terminal.

In testimony whereof I have signed my name to this specification.

ALLEN T. BALDWIN.

